linux-kernel - Re: [PATCH v5] arm64: dts: qcom: qcm6490-idp: Add definition for three LEDs

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Date: Thu, 18 Jan 2024 10:06:46 +0800
From: hui liu <quic_huliu@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross
	<agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio
	<konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Krzysztof
 Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_fenglinw@...cinc.com>
Subject: Re: [PATCH v5] arm64: dts: qcom: qcm6490-idp: Add definition for
 three LEDs



On 1/17/2024 11:41 AM, Dmitry Baryshkov wrote:
> On Wed, 17 Jan 2024 at 05:02, hui liu <quic_huliu@...cinc.com> wrote:
>>
>>
>>
>> On 1/15/2024 6:26 PM, Krzysztof Kozlowski wrote:
>>> On 15/01/2024 11:18, hui liu wrote:
>>>>
>>>>
>>>> On 1/15/2024 5:56 PM, Dmitry Baryshkov wrote:
>>>>> On Mon, 15 Jan 2024 at 11:48, Hui Liu via B4 Relay
>>>>> <devnull+quic_huliu.quicinc.com@...nel.org> wrote:
>>>>>>
>>>>>> From: Hui Liu <quic_huliu@...cinc.com>
>>>>>>
>>>>>> Add definition for three LEDs to make sure they can
>>>>>> be enabled base on QCOM LPG LED driver.
>>>>>
>>>>> The "function" property is still placed incorrectly. Posting the next
>>>>> iteration before concluding the discussion on the previous one is not
>>>>> the best idea.
>>>> Do you mean I should update it as below? Seems there is no consumer to
>>>> use the function config, do we need to add now?
>>>
>>> Paste the output of dtbs_check for your board (or CHECK_DTBS=y for your
>>> Makefile target).
>> I checked the dt-binding file of LPG LED, I will update the dts as
>> below, if you think it's correct, I will push v6.
> 
> Is there any reason why you are defining three different LEDs instead
> of multi-led with three components?

In the HW design, they are three seprete LEDs, there are three LEDs on 
device. why do we need to add for multi-led?

Thanks,
Hui
> 
>>
>> +&pm8350c_pwm {
>> +       #address-cells = <1>;
>> +       #size-cells = <0>;
>> +       status = "okay";
>> +
>> +       led@1 {
>> +               reg = <1>;
>> +               color = <LED_COLOR_ID_RED>;
>> +               function = LED_FUNCTION_STATUS;
>> +       };
>> +
>> +       led@2 {
>> +               reg = <2>;
>> +               color = <LED_COLOR_ID_GREEN>;
>> +               function = LED_FUNCTION_STATUS;
>> +       };
>> +
>> +       led@3 {
>> +               reg = <3>;
>> +               color = <LED_COLOR_ID_BLUE>;
>> +               function = LED_FUNCTION_STATUS;
>> +       };
>> +};
> 
> 
>